When I run CosmoMC with check-pointing, stop running it, and start again later from the checkpoint, the code seems to have issues and stops. In addition, some of the chain files appear to stop around 20 lines in length, and GetDist fails to read them.

I currently have the Planck Likelihood Code installed with gfortran and CosmoMC compiled with gfortran. I had not had this issue when I used ifort. Due to an issue with the PLC, it had to be reinstalled, however, and it was reinstalled with gfortran.

Here are two samples of the last things written to the screen by CosmoMC:

It appears that I did use gfortran 6.2. However, since both are installed it may have compiled partly with gfortran 4.9. I have recompiled it ensuring that the later version of gfortran is used for everything. I am currently rerunning it to see if that fixed the issue.